Ractive does have a way of including JavaScript evaluations in the template which as far as I'm aware is unique: http://learn.ractivejs.org/#!/expressions/1 htt

Ractive does have a way of including JavaScript evaluations in the template which as far as I'm aware is unique: http://learn.ractivejs.org/#!/expressions/1 http://learn.ractivejs.org/#!/expressions/1 The JavaScript expression is parsed into an AST, and references to parts of the data model are extracted so they can be dependency tracked and evaluated against the right context. Quite hard to explain concisely but I think it does what you're after.